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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 257 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0973 To DTC P2764) >> DTC P0976 or P0977 >> Conditions for Setting the DTC >> P0977

Conditions for Setting the DTC: P0977

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The TCM detects an internal high voltage electrical malfunction of the SS 2 control circuit when the SS 2 is commanded ON for 300 milliseconds.

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